* {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: #333;
}

body {
  font-size: 16px;
  font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif;
  
}

.container {
  width: 1200px;
  margin: 0 auto;
}

input {
  outline:none;
  appearance: none;
  width: 100%;
  height: 100%;
  border: none;
  font-size: 16px;
  padding: 0 10px;
  box-sizing: border-box;
  border-radius: 4px;
}

button {
  appearance: none;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 10px;
  box-sizing: border-box;
}

p {
  text-align: left;
  text-indent: 2em;
  line-height: 1.6;
}

h2, h3 {
  margin: 10px;
  text-align: left;
}